Funny man Jim Carrey has had zero contact with the son of his ex-girlfriend, Jenny McCarthy, since the couple split in 2010. Find out why our expert says Jim is in the wrong!

Breaking up is hard to do, but it’s even harder when there are children involved — just ask Jenny McCarthy! The former Playboy model, 39, recently revealed that Jim Carrey, her ex of five years, is refusing to have any contact with her 10-year-old son, Evan. Though Jim may have his reasons for staying away, a child psychiatrist tells HollywoodLife.com that he needs to man up and visit the boy!

“Jim needs to show Evan that he hasn’t rejected him,” Beverly Hills child psychiatrist Dr. Carole Lieberman tells HollywoodLife.com. “I think Jim should agree to see Evan maybe once every four to six weeks. It could just be something small like a trip to McDonald’s. He needs to explain that he’s not his mom’s boyfriend anymore, but that he still likes him and that he’ll see him from time to time when he can.”

So as not to confuse Evan, who is autistic, Dr. Lieberman recommends that Jim, 50, keep reminding Evan during each visit that he misses him too, but that he’s not going to be his new daddy.

While it’s completely understandable that Evan would become attached to Jim after five years, many wonder if Jenny has ulterior motives for the reunion. “Could Jenny really be doing this as a way to get back with him?,” questioned Dr. Lieberman. “Maybe that’s what he’s afraid of.”

As we told you previously, Jenny has been dating NFL star Brian Urlacher since April and the two recently went public with their relationship.

“You have to wonder why Evan doesn’t seem to be getting attached to Brian. Why is he still asking about Jim if her mother has a new serious boyfriend,” notes Dr. Lieberman. “If Jim starts coming around to visit Evan, it might cause problems in her relationship.”